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Head-to-head · IT Alerting Software

Splunk On-Call vs Alertmanager

  • Updated Oct 2026
  • Both researched from official sources
  • 3 checks side by side
Higher score Splunk On-Call #3 in IT Alerting Software 9.0/10 14-day trial Free trial✓ 2 of 5 features Visit Splunk On-Call
Alertmanager #6 in IT Alerting Software 8.7/10 Free plan Free plan✓ 0 of 5 features Visit Alertmanager

Splunk On-Call leads on 0 checks, Alertmanager on 1, and 2 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreSplunk On-Call · 9.0/10
  • Free planonly Alertmanager
  • Free trialonly Splunk On-Call
  • Most featuresSplunk On-Call · 2 of 5

Splunk On-Call scores higher on our rubric for it alerting software: 9.0 against 8.7 out of 10; our editors rank them #3 and #6.

Alertmanager offers free plan; Splunk On-Call doesn't.

Splunk On-Call is the better fit for low-cost established on-call operations. Alertmanager is the better fit for teams routing alerts from self-hosted Prometheus.

  • Splunk On-Call fits best

    Low-cost established on-call operations

  • Alertmanager fits best

    Teams routing alerts from self-hosted Prometheus

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Splunk On-Call 9.0/10 Visit ↗ Alertmanager 8.7/10 Visit ↗
At a glance
Editor score 9.0 8.7
Ranking #3 in IT Alerting Software #6 in IT Alerting Software
Best for Low-cost established on-call operations Teams routing alerts from self-hosted Prometheus
Pricing model Paid Free
Starting price $5/user/mo Free plan
Free plan — ✓ (best)
Free trial 14 days —
Deployment Cloud, Mobile Self-hosted
Platforms Web, iOS, Android Web, Windows, macOS, Linux
Support Docs Community, Docs
Integrations 100+ integrations 17 integrations
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Splunk On-Call 2/5 · Alertmanager 0/5
On-call scheduling ✓ (best) Not checked yet
Escalation policies ✓ (best) Not checked yet
Alert acknowledgment Not checked yet Not checked yet
Incident status pages Not checked yet Not checked yet
Mobile apps Not checked yet Not checked yet
Specs
Alert source integrations Not checked yet Not checked yet
Our review
Pros
  • On-call rotations, shifts, overrides and timed escalation policies
  • 100+ IT service management integrations plus Slack and monitoring tools
  • Web, iOS and Android response with timelines, reviews and audit trails
  • Deduplicates and groups alerts before notification.
  • Routing trees direct notifications to configured receivers.
  • Supports silencing, inhibition and high-availability clustering.
Cons
  • No free plan; pricing starts with paid annual per-user billing
  • Status updates use Statuspage integration rather than a built-in status page
  • Support channel listed is documentation
  • No native on-call scheduling.
  • Requires self-hosted deployment and configuration.
  • Support is through community resources and documentation.
Our verdict

Splunk On-Call is incident response software for engineering, DevOps and IT operations teams. It ingests alerts from infrastructure and application monitoring tools, routes them to on-duty responders, and coordinates incident actions…

Read the review →

Alertmanager handles alerts in the Prometheus ecosystem, receiving them from Prometheus and other clients before sending notifications to configured receivers. It is a fit for teams that operate their own monitoring infrastructure and need…

Read the review →
  1. Splunk On-CallIT Alerting Software 9.014-day trial
  2. AlertmanagerIT Alerting Software 8.7Free plan

Strengths and trade-offs

  • Splunk On-Call — where it wins

    • On-call rotations, shifts, overrides and timed escalation policies
    • 100+ IT service management integrations plus Slack and monitoring tools
    • Web, iOS and Android response with timelines, reviews and audit trails

    Where it doesn't

    • No free plan; pricing starts with paid annual per-user billing
    • Status updates use Statuspage integration rather than a built-in status page
    • Support channel listed is documentation

  • Alertmanager — where it wins

    • Deduplicates and groups alerts before notification.
    • Routing trees direct notifications to configured receivers.
    • Supports silencing, inhibition and high-availability clustering.

    Where it doesn't

    • No native on-call scheduling.
    • Requires self-hosted deployment and configuration.
    • Support is through community resources and documentation.

More comparisons

All IT alerting software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update